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POMaze solver gets stuck in a loop at a dead-end
 

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  1. POMaze solver gets stuck in a loop at a dead-end
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    <p>I'm working in a Maze solver algorithm and everything is working fine until it hits a dead-end and gets stuck in a loop, <a href="http://i.imgur.com/NYtCY.png" rel="nofollow">like this</a>. The problem seems to be that when it want to turn around there aint enough space for it so instead it makes another turn since it faces a wall in front and thus gets stuck in an endless loop.</p> <p>Here are the two codes I'm working with but the first one is the most relevant one.</p> <p><code>SimpleWindow</code> is the main window where everything gets drawn etc, and the <code>maze</code> class is the file which generates the mazes and values for example <code>wallAtLeft</code>, <code>wallInFront</code>, <code>atExit</code> (these are all boolean)</p> <pre><code>import se.lth.cs.ptdc.window.SimpleWindow; import se.lth.cs.ptdc.maze.*; public class MazeTurtle extends Turtle { protected int Maze; public MazeTurtle(SimpleWindow w, int x, int y) { super(w, x, y); } public void walk(Maze maze) { Maze m = new Maze(4); Turtle t = new Turtle(w, m.getXEntry(), m.getYEntry()); int x1 = m.getXEntry(); int y1 = m.getYEntry(); int dir = t.getDirection(); t.penDown(); while ((m.atExit(x1, y1)) == false) { if (m.wallAtLeft(dir, x1, y1) == true) { t.forward(1); SimpleWindow.delay(10); } else if (m.wallAtLeft(dir, x1, y1) == false) { t.left(90); t.forward(1); SimpleWindow.delay(10); } if (m.wallInFront(dir, x1, y1) == true) { t.left(-90); t.forward(1); SimpleWindow.delay(10); } x1 = t.getX(); y1 = t.getY(); dir = t.getDirection(); System.out.println("X: " + x1 + "Y: " + y1); } } } </code></pre> <p>Here is the program that draws everything:</p> <pre><code>import se.lth.cs.ptdc.window.SimpleWindow; import se.lth.cs.ptdc.maze.*; public class MazeTest { public static void main(String args[]) { Maze m = new Maze(4); SimpleWindow w = new SimpleWindow(600, 600, "MazeTest"); MazeTurtle t = new MazeTurtle(w, m.getXEntry(), m.getYEntry()); t.penDown(); m.draw(w); t.walk(m); } } </code></pre> <p>The maze class with descriptions if it is needed. Note that only some of the methods are needed for this. <a href="http://pastebin.com/gxSeEc2U" rel="nofollow">http://pastebin.com/gxSeEc2U</a></p> <p>This is the turtle class I'm using: <a href="http://pastebin.com/0RqbVudn" rel="nofollow">http://pastebin.com/0RqbVudn</a></p>
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    1. USRob
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    1. CODon't use too small corridor ;-)
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    2. COHow wide is a "corridor"?
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    3. COWell I can only use these predetermined labyrinths. There are a total of 5. It completes the first 3 without any problem but in the 4th and 5th it gets stuck in dead-ends.
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      1. POMaze solver gets stuck in a loop at a dead-end
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